Raisecom RC801-30B-FV35 series User Manual Download Page 16

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Raisecom Technology Co., Ltd.

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If the modem is not working in pairs, it is required that the other brand equipment be

configured exactly the same as the local modem, including PCM30/31 format, CRC

enable/disable, and timing resource etc. If these parameters are properly configured, then

please pay attention to the V.35 data engrossment in frame format. Refer to Chapter 1.3.4 for

timeslot engrossment and ensure that both equipments have the same configuration.

After success of the second step (or ensure the 3

step), it is indicated that the

communication link between local and remote equipments is working properly. Now, if the

remote V.35 interface is connected properly but still cannot communicate normally, please

adjust the TX CLK or RX CLK phase option on remote modem (or converter).

If the link still remains disconnected, please contact the technical support from the local

distributors. It is strongly suggested users present a report of the encountered problems along with

network topology, and the test details of the above four steps, and email the report to the technical

support.

4.3 Fault-pass-through Function

If LAL alarm appears, DCD signals will be disconnected at V.35 interface, and the DTE shall

response that.

If RAL alarm appears, CTS signals will be disconnected at V.35 interface, and the DTE shall

response that.

4.4 FAQs

If there is any problem during installation and operation, please try the following solutions. If the

problems still cannot be solved, please contact distributors for technical support.

Local Alarm Indicator is ON.

Answer: It is possible that there is uplink alarm (AIS), loss of frame (LOF), or CRC alarm

appearing on the modem. It indicates that the signal received is abnormal. Please check the link

quality and interface parameter at the remote site.

Remote Alarm Indicator is ON.

Answer: It is because there is receiving alarm at the remote site. The signal is send by the remote

interface converter RC903-V35FE1.

Optical Interface LLOS (RLOS) is ON.

Answer: Receiving signal at optical interface is lost. Please check if the optical input (RX) is

connected, or reversely connected. Users can use the optical power meter to test the receiving

optical power to check if it is above the threshold of optical receiving sensitivity.

Optical Interface LLOF (RLOF) is ON.

Answer: Optical receiving signal is loss of frame. Optical signals are receiving but the optical

power may be around the threshold. Please check the receiving optical power. If connects modem

Summary of Contents for RC801-30B-FV35 series

Page 1: ...Raisecom Technology Co Ltd http www raisecom com 1 RC802 30B FV35 Series N 64K V 35 Interface Fiber Optic Modem User Manual Raisecom Technology Co Ltd ...

Page 2: ...YPE 6 2 2 1 Point to point Fractional Mode Master Clock Slave Clock Topology 7 2 2 2 Point to point Fractional Mode Terminal Clock Slave Clock Topology 7 2 2 3 Point to point Transparent Mode Master Clock Master Clock Topology 8 EXTENDED CONNECTION TYPE 8 CHAPTER 3 PREPARATION 9 3 1 DESCRIPTION OF THE FRONT PANEL 9 3 1 1 Definition of the Indicators 9 3 1 2 V 35 DCE Interface 10 3 1 3 Fiber Optic ...

Page 3: ...Technology Co Ltd http www raisecom com 3 CHAPTER 4 INSTALLATION AND TROUBLESHOOTING 15 4 1 CAUTIONS BEFORE APPLYING THE POWER SUPPLY 15 4 2 CONNECTION DIAGNOSIS 15 4 3 FAULT PASS THROUGH FUNCTION 16 4 4 FAQS 16 ...

Page 4: ... the local site to realize the remote management 1 1 Main Features 1 2 Product Specifications 1 2 1 Fiber Optic Interface Specification Bit rate 100Mbps Line code 4B5B Fiber connecter SC Optical Transmission of dual strand fiber Transmit power 5 dBm Receiving sensitivity 35 dBm Transmit Wavelength 1310nm Distance 40km 1 2 2 V 35 Interface Specification Physical characteristics Complies with V 35 i...

Page 5: ...nd No 16 timeslot shall be skipped if N is larger than 16 TS 1 TS 31 V 35 BANWIDTH TS N 1 TS 0 TS 16 1 2 4 Power Supply Power Supply DC 48V tolerance range from 36V to 72V AC 220V tolerance range from 165V to 265V Power Consumption 5W 1 2 5 Ambience Working Temperature 0 45 Relative Humidity 90 25 1 2 6 Dimensions Standalone equipment can be placed on the table Dimension 142 width x 38 height x 17...

Page 6: ...om the fiber optic receiving link also called Restoring Clock Terminal Clock Mode The timing resource is provided by the DTE also called System Clock 2 1 2 Compatibility If RC801 30B FV35 is connected with G 703 interface fiber optic modem and then connected with other brand name E1 fractional mode equipment i e V 35 to fractional E1 interface converter E1 interface Router or such equipment as DXC...

Page 7: ...s shall work as DTE For the convenience of installation and test it is advised to set the local modem Master Clock Mode and remote modem Slave Clock Mode That is the timing resource is from the local modem 2 2 2 Point to point Fractional Mode Terminal Clock Slave Clock Topology When the remote DTE must follow the timing resource of local DTE the TX Clock is Internal Clock in local DTE it is advise...

Page 8: ...modem which will convert the optical signals to G 703 compliant E1 electrical signals and then connect with a V 35 to fractional E1 interface converter Users can adopt Raisecom series interface converters such as RC903 V35FE1 and RC904 V35FE1 and also other brand name interface converters RC801 30B FV35 光缆 Router Router V 35 DTE wire E1 RC903 V35FE1 V 35 DTE wire RC802 30B If deploying E1 interfac...

Page 9: ...cal link red ON receiving signal error occurs at local optical link include AIS LOF and CRC RAL Remote receiving signal error alarm in optical link red ON receiving signal error occurs at remote optical link include AIS LOF and CRC LLOS Local signal loss alarm in optical link red ON when local receiving optical link is disconnected RLOS Remote signal loss alarm in optical link red ON when remote r...

Page 10: ...ur at the remote transmit and receive link then LAL and RAL can be used to indicate this alarm If users do not adopt Raisecom V 35 to fractional E1 interface converter i e RC903 V35FE1 then the RAL indicator is invalid 3 1 2 V 35 DCE Interface V 35 interface adopts V 35 ISO2593 DCE Connector Face 34 pin Female connector It can be connected by standard DTE cable The definitions of the pins are as f...

Page 11: ...terface Bandwidth Setup V 35 bit rate is N 64kbps N 1 31 when working at fractional E1 mode V 35 bit rate is 2048kbps when working at transparent E1 mode These 5 bits of the dip switch are actually representing the binary code of the N value When N is configured to 0 RC801 30B FV35 is working at transparent E1 mode 1st bit 2nd bit 3rd bit 4th bit 5th bit Bandwidth bit s 0 0 0 0 0 2048K transparent...

Page 12: ... the above table for switch status Max bandwidth 1 is the maximum bandwidth in PCM30 Max bandwidth 2 is the maximum bandwidth in PCM31 3 2 2 The 6th Bit V 35 Bandwidth Control Option 6th bit Bandwidth Control Option OFF Master Control ON Slave Control The following conditions shall be satisfied in order to realize the remote bandwidth control function 1 RC801 30B FV35 series modems are deployed po...

Page 13: ...hen configuring the timing resource V 35 DTE interface on Routers shall also be configured Both TX and RX clock shall be External Clock mode at V 35 interface that connected with Master Slave Clock equipment The TX Clock shall be Internal Clock mode and RX Clock shall be External Clock mode at the V 35 interface that connected with Terminal Clock equipment 3 2 4 The Factory Default Setup of SW1 Al...

Page 14: ...he link requirement The local and remote sites shall have the same configuration Loop back test is the auxiliary function used for users to test and diagnose the equipment and link Local Loop back is performed at local V 35 interface and used for test and diagnosis the V 35 interface The local V 35 interface loop back can only performed on the Master Clock and Terminal Clock equipment As the above...

Page 15: ...st not be reversely connected 4 2 Connection Diagnosis LERR or RERR indicator may be ON when just after connecting the optical fiber This is because a few error bits are generated by connecting cables LERR and RERR indicators shall be OFF in 10 20 seconds Check if there is any alarm on local equipment Test if data communication can be performed between local DTE and remote equipment If the test is...

Page 16: ... LAL alarm appears DCD signals will be disconnected at V 35 interface and the DTE shall response that If RAL alarm appears CTS signals will be disconnected at V 35 interface and the DTE shall response that 4 4 FAQs If there is any problem during installation and operation please try the following solutions If the problems still cannot be solved please contact distributors for technical support Loc...

Page 17: ...g resource setup 2 Check V 35 interface status of the Router if there are data errors on input and output then it indicates that TX CLKand RX CLK phase relationship need to be adjusted This problem can be located by performing local V 35 interface loop back test 3 Cable loose Compatibility with similar equipment of other brands Answer Raisecom RC801 30B FV35 cannot cooperate with similar products ...

Page 18: ...w raisecom com 18 BROADBAND To RAISECOM Copyright Declaration Raisecom Technology Co Ltd is the owner of this manual booklet The part or whole of this manual is not allowed to reproduce without Raisecom s permission All rights Reserved ...

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